In the figure below, points A, B, and C are collinear, and AB and BC are each 6 units long. If the area of ACD is 24 square units, how many units long is the altitude BD?

Question

In the figure below, points A, B, and C are collinear, and AB and BC are each 6 units long. If the area of ACD is 24 square units, how many units long is the altitude BD?
A. 2
B. 4
C. 6
D. 8
E. 12

Anonymous · Answer

Are the points (4,-12), (6, -3) and (12, 24) collinear

In the figure below, points A, B, and C are collinear, and AB and BC are each 6 units long. If the area of �ACD is 24 square units, how many units long is the altitude BD?